5

FN8090.1

October 7, 2005

SDA vs SCL Timing

WP Pin Timing

NOTES:

incremental voltage when changing from one tap to an adjacent tap.

7.

for i = 16 to 240 decimal, T = -40°C to 85°C. Max( ) is the maximum value of the wiper

voltage and Min ( ) is the minimum value of the wiper voltage over the temperature range.

8. MI =

12.

for i = 32 to 255, T = -40°C to 85°C. Max( ) is the maximum value of the resistance and Min ( ) is the

minimum value of the resistance over the temperature range.

13. This parameter is not 100% tested.

SDA and SCL Fall Time

20 +

0.1 * Cb

250

ns

Cb (Note 13)

Capacitive Loading of SDA or SCL Total on-chip and off-chip

10

400

pF

Rpu (Note 13)

SDA and SCL Bus Pull-Up

Resistor Off-Chip

For Cb = 400pF, max is about 2~2.5k

Ω.

For Cb = 40pF, max is about 15~20k

Ω

1k

Ω

12

20

ms

WP Setup Time

Before START condition

600

ns

WP Hold Time

After STOP condition

600

ns

SYMBOL

PARAMETER

TEST CONDITIONS

MIN

TYP

(Note 1)

MAX

UNITS

SCL

SDA

(INPUT TIMING)

SDA

(OUTPUT TIMING)

SCL

SDA IN

WP

CLK 1

START

STOP

Max V RW

()

i

() Min V RW

()

i

()

–

Max V RW

()

i

() Min V RW

()

i

()

+

[] 2

⁄

----------------------------------------------------------------------------------------------

125°C

-----------------

×

=

Max Ri

() Min Ri

()

–

[]

Max Ri

() Min Ri

()

+

[] 2

⁄

----------------------------------------------------------------

10

6

125°C

-----------------

×

=

ISL95810